are there any side effects from b12 injections Shots: Vitamin B12 Benefits, Uses, Risks What You Need to Know
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Will the injection hurt

Choline aids in the emulsification of fat and cholesterol

Feeling off but not sure why

Both B12 and Iron are essential in red blood cell production

Metabolic pathway modeling

Intramuscular therapy leads to more rapid improvement and should be considered in patients with severe deficiency or severe neurologic symptoms
